Dying Light Everybody Dance Now Trophy / Achievement will give you one Bronze trophy or 10 gamerscore points. To get this Trophy / Achievement, you must electrocute 5 monsters at the same time.
You will need electric traps for completing the Dying Light Everybody Dance Now Trophy / Achievement. To get hold of these electric traps, start searching from the very beginning of this game. You will find the electric traps on a street north of the safe zone, in the Slums, where the game starts.
After you get these traps its show time! You need the monster's attention, lure them by throwing firecrackers. As soon as you are sure that you are successful in attracting 5 of them in the trap, activate the switch which will electrocute 5 monsters at the same time.
If you are still not sure, watch the following video on how to get the Dying Light Everybody Dance Now Trophy / Achievement. This game is now available on PC, PS4 and Xbox One.